CN209656782U - A kind of transformer harmonic measurement device - Google Patents

Abstract

The utility model creation provides a kind of transformer harmonic measurement device, including equipment box, cover plate and folding supporting mechanism；Harmonic detector, current transformer, voltage transformer and flexible mounting rod are equipped in equipment box；Folding supporting mechanism is mounted on the bottom of equipment box, for being supported to equipment box；Cover plate is hingedly mounted on the upside opening edge of equipment box, for covering to upside opening；Flexible mounting rod is used for electrical connection installation current transformer and voltage transformer on the power transmission line that transformer connects；Harmonic detector is electrically connected with current transformer and voltage transformer respectively.The detection device can be easy to use using folding supporting mechanism using the support for carrying out equipment box, folded and packed up in transport, be readily transported；Using flexible mounting rod preferable safety protection function can be played convenient for long-range electrical connection current transformer and voltage transformer.

Description

A kind of transformer harmonic measurement device

Technical field

The invention is related to a kind of detection device of electric system, especially a kind of transformer harmonic measurement device.

Background technique

With the development of science and technology, more and more power electronic equipments and power equipment are run as nonlinear load In power grid, a large amount of idle and harmonic wave is produced, because power supply system and transmission line of electricity have impedance varying with frequency, respectively Subharmonic current will generate certain voltage drop when flowing through power grid, superposition on the supply voltage, causes grid voltage waveform to be sent out Raw distortion, declines power supply quality, causes great " pollution " to power grid, brings greatly to the safe operation of electric system Harm.It is therefore desirable to design a kind of transformer harmonic measurement device, can personnel convenient for safeguarding to the transformation in power grid The quick detection of device progress harmonic loss.

Summary of the invention

The purpose of the invention is: a kind of transformer harmonic measurement device, can personnel convenient for safeguarding in power grid Transformer carry out harmonic loss quick detection.

In order to realize that foregoing invention creates purpose, the invention provides a kind of transformer harmonic measurement device, including Equipment box, cover plate and folding supporting mechanism；It is mutual that harmonic detector, current transformer, voltage are equipped in equipment box Sensor and flexible mounting rod；Folding supporting mechanism is mounted on the bottom of equipment box, for being supported to equipment box；Case Cover board is hingedly mounted on the upside opening edge of equipment box, for covering to upside opening；Flexible mounting rod is used for Electrical connection installation current transformer and voltage transformer on the power transmission line of transformer connection；Harmonic detector is mutual with electric current respectively Sensor and voltage transformer electrical connection, the voltage signal and current signal on power transmission line for acquiring transformer connection.

Further, folding supporting mechanism includes vertical supporting pipe, inserting rod, hound and two swing struts；In Stay tube hinged seat is equipped in the middle part of the back edge of equipment box downside, the upper end of vertical supporting pipe is hingedly mounted on stay tube hinged seat On, make the lower end of vertical supporting pipe can swing；The upper end of inserting rod is inserted into the lower end of vertical supporting pipe；In inserting rod On be arranged at intervals with threaded hole, on the tube wall of vertical supporting pipe be equipped with limit hole；Caging bolt is installed on limit hole, is used It is mounted on threaded hole in threaded engagement；It is hinged that front side on equipment box downside and positioned at stay tube hinged seat is equipped with strut Seat；The upper end of hound is hingedly mounted on strut hinged seat, makes the lower end of hound can swing；In the lower end of hound It is equipped with U-shaped plug；Limit flange collar is equipped on the outer wall of vertical supporting pipe；U-shaped plug is buckled on vertical supporting pipe, and U-shaped The lower side of plug presses on limit convex circle；It is horizontally arranged on inserting rod and is laterally hinged with axis, on the left side for being laterally hinged with axis One side hinged block is hingedly installed on right both ends；Be equipped on two side hinged blocks one be laterally hinged with axis phase The end of vertical strut articulated shaft, two swing struts is hingedly mounted on the strut articulated shaft of two side hinged blocks respectively On；It is equipped with front side strut in the front side of inserting rod, lateral compression bar is vertically installed on the front end of front side strut；In lateral compression bar Both ends be equipped with one for press swing strut on press head；In the lower end of inserting rod and two swing struts Lower end be equipped with one piece of footing backing plate.

Further, press head includes C-shaped by wedge, pressing axis, fixes sleeve and support spring；In lateral compression bar Both ends are equipped with circular shaft bore；Fixes sleeve is mounted at the upper aperture of circular shaft bore, and support spring is set in fixes sleeve； The upper end of pressing axis is protruded into fixes sleeve after running through circular shaft bore, and anti-dropout flange collar is equipped on inserting end；Support spring It is resiliently supported between the top cylinder bottom of fixes sleeve and the upper end of pressing axis；C-shaped is fixed at pressing axis by wedge On lower end；C-shaped presses the c-shaped opening of wedge downward, is swinging strut for buckling pressing.

Further, the front side on equipment box downside and positioned at strut hinged seat is equipped with inserted link locking buckle；It inserts Rod locking buckle is made of locking bed and two arc-shaped spring pieces；The C-shaped card for buckling inserting rod is equipped on locking bed Catching groove mouth, and c-clip notch is opening down；Two arc-shaped spring pieces are separately mounted to the opening two sides of c-clip notch Bian Shang；Inserting rod swing forward after enter c-clip notch in, two arc-shaped spring pieces opening to inserting rod into notch It squeezes.

Further, it is horizontally arranged with one on vertical supporting pipe and is transversely mounted bar；It is equal at the both ends for being transversely mounted bar Equipped with a swing rod locking buckle；Swing rod locking buckle is by snap seats, locking tension spring and a rectangular locking bar；In snap seats Equipped with U-lag mouth, and rectangular lockhole is equipped on the notch side of U-lag mouth；Rectangular locking bar is inserted into rectangular lockhole, is used for Locking is carried out to the opening of U-lag mouth；Lever, and shelves are vertically installed on the end that rectangular locking bar is located in U-lag mouth It is directed toward in U-lag mouth the end of bar；It is located on the end outside U-lag mouth in rectangular locking bar and is equipped with end disc；Lock tension spring set It is located on rectangular locking bar, and is located at outside U-lag mouth；The both ends of locking tension spring are respectively and fixedly installed to snap seats and end disc On.

Further, harmonic detector by power module, shell, LCD display, microprocessor, electric current A/D collector, Voltage A/D collector and two low-pass filter circuit compositions；Microprocessor, electric current A/D collector, voltage A/D collector And two low-pass filters are all set in shell, LCD display is set on the upper side of shell；Current transformer it is defeated Outlet is electrically connected by low-pass filter circuit with the input terminal of electric current A/D collector；The output end of voltage transformer passes through low Bandpass filter circuit is electrically connected with the input terminal of voltage A/D collector；The output of electric current A/D collector and voltage A/D collector End is electrically connected with the two-way input terminal of microprocessor respectively；The display signal end of microprocessor and the control terminal electricity of LCD display Connection；Power module is respectively LCD display, microprocessor, electric current A/D collector, voltage A/D collector and two low passes Filter circuit power supply；It is equipped with power switch and detection button on the shell；Power switch is serially connected in total power supply of power module On route；Detection button is electrically connected with the control signal input of microprocessor.

Further, current transformer is split core type current transformer, and split core type current transformer is equipped with two squeeze grips Bar；Two conductive clips are electrically connected on two binding posts of primary side of voltage transformer, and conductive clip is equipped with two and presses handle Hand lever；Electricity pincers limited post and electricity folder limited post are equipped in equipment box；Split core type current transformer is clamped on electricity pincers limited post； Conductive clip is clamped on electricity folder limited post.

Further, flexible mounting rod include insulated telescopic rods, fixes sleeve, insulation wire drawing, quill, wire spool, Pulling force pressing lever and gripping handle；Insulated telescopic rods are made of outer tube, middle sleeve and internal core rod；During internal core rod is inserted into In casing, middle sleeve is inserted into outer tube；Handle is held to be fixedly mounted on the tail end of outer tube；Fixes sleeve is fixedly mounted On the outer end of internal core rod；First pulley is installed on the outer wall of fixes sleeve；On outer tube and close to gripping handle Place is equipped with second pulley；The end of pulling force pressing lever be hingedly mounted on hold handle on, pulling force pressing lever and hold handle it Between the resilient support both ends that are provided with rebound pressure spring, and spring back pressure spring pass through positioning column and be mounted；On pulling force pressing lever It is vertically installed with pulling force swing rod, and is equipped with v-shaped gap notch in the swing end of pulling force swing rod；Be equipped on pulling force swing rod around Terminal, and anticreep disk is equipped in the end of wrapping post；Wire spool is rotatably mounted on outer tube by support；Insulation wire drawing One end be connected on quill, the other end successively passes through first pulley, second pulley, v-shaped gap notch and wrapping post After be wound around on wire spool；Insulating, at least winding five is enclosed on wrapping post for wire drawing；V-shaped gap notch presss from both sides insulation wire drawing It holds；Fixes sleeve and quill are used to be respectively sleeved on two squeeze grip bars of conductive clip or split core type current transformer Two squeeze grip bars on.

Further, buckle disk is equipped in the tail portion of quill；It is equipped in fixes sleeve for being buckled in buckle C-shaped plug on disk；Coiling driving handle is fixedly installed in the shaft of wire spool；Case is equipped in the front side of equipment box Body handle；Side strip is hingedly installed in the forward edge of cover plate, lock convex block is equipped on side strip；In equipment box Front side is equipped with the lock embedded hole entered convenient for lock convex block, and the magnetic for adsorbing lock convex block is equipped in lock embedded hole Iron.

Further, a Telescopic positioning device is equipped on the port outer wall of outer tube and middle sleeve；Flexible positioning Mechanism is made of annulus set, Locating extension spring and positioning pin rod；Dowel hole is equipped on annulus set, positioning pin rod is inserted into fixed In the pin hole of position；The insertion end of positioning pin rod is set as hemispherical ends, and rod end disk is equipped on the outer end of positioning pin rod； Locating extension spring is set on positioning pin rod, and the both ends of Locating extension spring are separately mounted to the outer wall and rod end disk of annulus set On；The flexible location hole convenient for positioning pin rod insertion is equipped in internal core rod and the insertion end of middle sleeve；Two flexible positioning The annulus set of mechanism is respectively sleeved on the port outer wall of internal core rod and middle sleeve, and is equipped with limiting block in the two sides of annulus set Circle.

The beneficial effect of the invention is: can use the branch for carrying out equipment box using folding supporting mechanism Support is easy to use, and is folded and is packed up in transport, is readily transported；It can be mutual convenient for long-range electrical connection electric current using flexible mounting rod Sensor and voltage transformer play preferable safety protection function.

Detailed description of the invention

Fig. 1 is the invention detection device using state structure diagram；

Fig. 2 is the equipment box schematic diagram of internal structure of the invention；

Fig. 3 is the locking bed structural schematic diagram of the invention；

Fig. 4 is the flexible mounting rod structural schematic diagram of the invention；

Fig. 5 is the Telescopic positioning device structural schematic diagram of the invention；

Fig. 6 is the snap seats overall structure diagram of the invention；

Fig. 7 is the electrical block diagram of the invention.

Specific embodiment

As shown in figs. 1-7, the invention provide a kind of transformer harmonic measurement device include: including equipment box 1, Cover plate 9 and folding supporting mechanism；Harmonic detector 2, current transformer 3, voltage transformer 5 are equipped in equipment box 1 And flexible mounting rod；Folding supporting mechanism is mounted on the bottom of equipment box 1, for being supported to equipment box 1；Case lid Plate 9 is hingedly mounted on the upside opening edge of equipment box 1, for covering to upside opening；Flexible mounting rod is used for Electrical connection installation current transformer 3 and voltage transformer 5 on the power transmission line of transformer connection；Harmonic detector 2 respectively with electricity Current transformer 3 and voltage transformer 5 are electrically connected, the voltage signal and electric current letter on power transmission line for acquiring transformer connection Number.It can be easy to use using the support for carrying out equipment box 1 using folding supporting mechanism, fold and pack up in transport, just In transport；Using flexible mounting rod preferable peace can be played convenient for long-range electrical connection current transformer 3 and voltage transformer 5 Full protection effect.

Further, folding supporting mechanism includes vertical supporting pipe 16, inserting rod 17, hound 34 and two swing supports Bar 19；Stay tube hinged seat 15 is equipped in the middle part of 1 downside back edge of equipment box, the upper end of vertical supporting pipe 16 is hingedly mounted on On stay tube hinged seat 15, make the lower end of vertical supporting pipe 16 can swing；The upper end of inserting rod 17 is inserted into vertical supporting pipe In 16 lower end；It is arranged at intervals with threaded hole 28 on inserting rod 17, limit hole is equipped on the tube wall of vertical supporting pipe 16；In Caging bolt 29 is installed on limit hole, is mounted on threaded hole 28 for threaded engagement；On 1 downside of equipment box and position Strut hinged seat 35 is equipped in the front side of stay tube hinged seat 15；The upper end of hound 34 is hingedly mounted on strut hinged seat 35, Make the lower end of hound 34 can swing；U-shaped plug 33 is equipped on the lower end of hound 34；In the outer of vertical supporting pipe 16 Wall is equipped with limit flange collar 32；U-shaped plug 33 is buckled on vertical supporting pipe 16, and the lower side pressing of U-shaped plug 33 is limiting In flange collar 32；It is horizontally arranged on inserting rod 17 and is laterally hinged with axis, the hinged installation on the left and right ends for be laterally hinged with axis There is a side hinged block 20；It is hinged that a strut perpendicular with axis is laterally hinged with is equipped on two side hinged blocks 20 The end of axis, two swing struts 19 is hingedly mounted on respectively on the strut articulated shaft of two side hinged blocks 20；In inserting rod 17 front side is equipped with front side strut 21, and lateral compression bar 22 is vertically installed on the front end of front side strut 21；In lateral compression bar 22 Both ends be equipped with one for press swing strut 19 on press head；It is swung the lower end of inserting rod 17 and two The lower end of strut 19 is equipped with one piece of footing backing plate 18.Utilize limit flange collar 32, the setting energy of hound 34 and U-shaped plug 33 It is enough that inclined shore is carried out to vertical supporting pipe 16, enable 16 vertical supporting of vertical supporting pipe in the lower section of equipment box 1, by Posterior edges are supported in vertical supporting pipe 16, the center of equipment box 1 is at middle part, it is therefore desirable to two swing struts 19 It is strutted in lower section in splayed, supported at three point is collectively formed with inserting rod 17；It can be realized swing support using side hinged block 20 The multi-angle of bar 19 is swung, convenient for swinging unfolding and folding for strut 19；Utilize front side strut 21, lateral compression bar 22 and pressing Head, which can be realized, swings the fixation limited support of strut 19 upon deployment.

Further, press head includes C-shaped by wedge 27, pressing axis 25, fixes sleeve 23 and support spring 24；In cross Circular shaft bore is equipped with to the both ends of compression bar 22；Fixes sleeve 23 is mounted at the upper aperture of circular shaft bore, and support spring 24 is set It is placed in fixes sleeve 23；The upper end of pressing axis 25 is protruded into fixes sleeve 23 after running through circular shaft bore, and is set on inserting end There is anti-dropout flange collar 26；Support spring 24 be resiliently supported at fixes sleeve 23 top cylinder bottom and pressing axis 25 upper end it Between；C-shaped is fixed on the lower end of pressing axis 25 by wedge 27；C-shaped presses the c-shaped opening of wedge 27 downward, for buckling Pressing is on swinging strut 19.One is constituted by wedge 27 using support spring 24, fixes sleeve 23, pressing axis 25 and C-shaped Flexible press head enables to equipment box 1 that can slightly roll forward when supporting and using tiltedly, enhances equipment box 1 stability when in use.

Further, the front side on 1 downside of equipment box and positioned at strut hinged seat 35 is equipped with inserted link locking buckle； Inserted link locking buckle is made of locking bed 36 and two arc-shaped spring pieces 38；It is equipped on locking bed 36 for buckling inserting rod 17 c-clip notch 37, and c-clip notch 37 is opening down；Two arc-shaped spring pieces 38 are separately mounted to c-clip On the opening two sides of notch 37；Inserting rod 17 enters in c-clip notch 37 after swinging forward, and two arc-shaped spring pieces 38 exist Opening squeezes inserting rod 17 into notch.It can be in indentation c-clip notch 37 using two arc-shaped spring pieces 38 Inserting rod 17 is squeezed, and inserting rod 17 is avoided to be detached from c-clip notch 37 easily.

Further, it is horizontally arranged with one on vertical supporting pipe 16 and is transversely mounted bar 30；It is being transversely mounted bar 30 Both ends are equipped with a swing rod locking buckle；Swing rod locking buckle is by snap seats 31, locking tension spring 66 and a rectangular locking bar 64；It is equipped with U-lag mouth 63 in snap seats 31, and is equipped with rectangular lockhole on the notch side of U-lag mouth 63；Rectangular locking bar 64 It is inserted into rectangular lockhole, carries out locking for the opening to U-lag mouth 63；It is located in U-lag mouth 63 in rectangular locking bar 64 End on be vertically installed with lever 65, and the end of lever 65 is directed toward in U-lag mouth 63；It is located at U-lag in rectangular locking bar 64 End outside mouth 63 is equipped with end disc 67；Locking tension spring 66 is set on rectangular locking bar 64, and is located at outside U-lag mouth 63； The both ends of locking tension spring 66 are respectively and fixedly installed in snap seats 31 and end disc 67.When can be folded using rectangular locking bar 64 The swing strut 19 entered in U-lag mouth 63 is locked, and to lock under the cooperation of locking tension spring 66 and discharge all It is more convenient；Using lever 65 effect can be located at U-lag mouth 63 in swing strut 19 carry out barrier, will not easily from Gap between rectangular 64 end of locking bar and 63 inner wall of U-lag mouth squeezes out.

Further, harmonic detector 2 is acquired by power module, shell, LCD display 12, microprocessor, electric current A/D Device, voltage A/D collector and two low-pass filter circuit compositions；Microprocessor, electric current A/D collector, voltage A/D acquisition Device and two low-pass filters are all set in shell, and LCD display 12 is set on the upper side of shell；Current transformer 3 output end is electrically connected by low-pass filter circuit with the input terminal of electric current A/D collector；The output end of voltage transformer 5 It is electrically connected by low-pass filter circuit with the input terminal of voltage A/D collector；Electric current A/D collector and voltage A/D collector Output end be electrically connected respectively with the two-way input terminal of microprocessor；The display signal end of microprocessor and LCD display 12 Control terminal electrical connection；Power module be respectively LCD display 12, microprocessor, electric current A/D collector, voltage A/D collector with And two low-pass filter circuit power supplies；It is equipped with power switch 13 and detection button 14 on the shell；Power switch 13 is serially connected in In total power supply line of power module；Detection button 14 is electrically connected with the control signal input of microprocessor.

Further, current transformer 3 is split core type current transformer, and split core type current transformer is equipped with two squeeze grips Bar；Two conductive clips 6 are electrically connected on two binding posts of primary side of voltage transformer 5, and conductive clip 6 is equipped with two pressings Handlebar stem；Electricity pincers limited post 4 and electricity folder limited post 7 are equipped in equipment box 1；Split core type current transformer is clamped in electricity pincers limit On column 4；Conductive clip 6 is clamped on electricity folder limited post 7.It can be to being placed on equipment using electricity pincers limited post 4 and electricity folder limited post 7 Split core type current transformer and conductive clip 6 in cabinet 1 are limited.

Further, flexible mounting rod include insulated telescopic rods 39, fixes sleeve 40, insulation wire drawing 42, quill 41, Wire spool 61, pulling force pressing lever 52 and gripping handle 59；Insulated telescopic rods 39 are by outer tube, middle sleeve and internal core rod structure At；Internal core rod is inserted into middle sleeve, and middle sleeve is inserted into outer tube；Hold the tail end that handle 59 is fixedly mounted on outer tube On；Fixes sleeve 40 is fixedly mounted on the outer end of internal core rod；First pulley 43 is installed on the outer wall of fixes sleeve 40； Second pulley 51 is equipped at handle 59 on outer tube and close to holding；The end of pulling force pressing lever 52 is hingedly mounted on gripping handle On hand 59, resilient support is provided with rebound pressure spring 58 between pulling force pressing lever 52 and gripping handle 59, and springs back pressure spring 58 Both ends pass through positioning column 57 and are mounted；Pulling force swing rod 53 is vertically installed on pulling force pressing lever 52, and in pulling force swing rod 53 swing end is equipped with v-shaped gap notch 55；Wrapping post 54 is installed on pulling force swing rod 53, and in the end of wrapping post 54 Equipped with anticreep disk 56；Wire spool 61 is rotatably mounted on outer tube by support 60；One end of insulation wire drawing 42 is connected to On quill 41, the other end is successively after first pulley 43, second pulley 51, v-shaped gap notch 55 and wrapping post 54 It is wound around on wire spool 61；Insulating, at least winding five is enclosed on wrapping post 54 for wire drawing 42；The 55 pairs of insulation wire drawings 42 of v-shaped gap notch It is clamped；Fixes sleeve 40 and quill 41 are for being respectively sleeved on two squeeze grip bars of conductive clip 6 or clamping On two squeeze grip bars of shape current transformer.Insulation wire drawing 42 can be clamped, drawn using v-shaped gap notch 55 Prevent insulation wire drawing 42 from loosening during dynamic；Insulated telescopic rods 39 are made of insulating materials, can be realized Remote Installation pincer Current transformer and conductive clip 6, play effective safety protection function；Using the steering-effecting of first pulley 43, so that insulation Quill 41 is directly pulled into fixes sleeve 40 in 42 drawing process of wire drawing.

Further, buckle disk 45 is equipped in the tail portion of quill 41；It is equipped in fixes sleeve 40 for buckling C-shaped plug 44 on buckle disk 45；Coiling driving handle 62 is fixedly installed in the shaft of wire spool 61；In equipment box The front side of body 1 is equipped with cabinet handle 8；Side strip 10 is hingedly installed in the forward edge of cover plate 9, is equipped on side strip 10 Latch convex block 11；The lock embedded hole entered convenient for lock convex block 11 is equipped in the front side of equipment box 1, and in lock embedded hole In be equipped with for adsorb latch convex block 11 magnet.Cooperation using buckle disk 45 and C-shaped plug 44 can be convenient for remotely taking Lower quill 41 is installed next split core type current transformer or conductive clip 6 again on power transmission line, is passed through upon completion of the assays The connection electric wire for pullling split core type current transformer or conductive clip 6 can be removed；Quill 41 and fixes sleeve 40 cannot be same When shut down, prevent from overexerting and shut down split core type current transformer or conductive clip 6 to come, it is therefore desirable to first unclamp insulation wire drawing 42, fixes sleeve 40 is shut down, C-shaped plug 44 is recycled to detain quill 41.

Further, a Telescopic positioning device is equipped on the port outer wall of outer tube and middle sleeve, and in port Outer wall is equipped with through hole；Telescopic positioning device is made of annulus set 47, Locating extension spring 49 and positioning pin rod 50；In annulus set 47 are equipped with dowel hole, and positioning pin rod 50 is inserted into dowel hole；The insertion end of positioning pin rod 50 is set as hemispherical End is equipped with rod end disk 48 on the outer end of positioning pin rod 50；Locating extension spring 49 is set on positioning pin rod 50, and is positioned The both ends of tension spring 49 are separately mounted on the outer wall and rod end disk 48 of annulus set 47；In the insertion end of internal core rod and middle sleeve On be equipped with convenient for positioning pin rod 50 pass through through hole insertion flexible location hole；The annulus of two Telescopic positioning devices covers 47 points It is not set on the port outer wall of internal core rod and middle sleeve, and is equipped with limit stop ring 46 in the two sides of annulus set 47.Using flexible Positioning mechanism can be realized the positioning of collapsing length, since the effect of Locating extension spring 49 makes positioning pin rod after rotational circle ring set 47 50 can be in the corresponding flexible location hole of quick insertion, when being withdrawn, as long as extracting the rotational circle ring set again of positioning pin rod 50 47, be just not in that positioning pin rod 50 is inserted into flexible location hole, guarantee quickly recycling；It can using the limit stop ring 46 of two sides The axial position for limiting annulus set 47, enables positioning pin rod 50 to be accurately inserted through hole after rotation.

In the transformer harmonic measurement device of the invention, the minimum system that microprocessor uses FPGA to constitute passes through Included FFT IP kernel completes FFT operation, so that the harmonic components on the power transmission line of transformer connection are obtained, it is used humorous Wave analysis algorithm is existing algorithm, is not the innovative point place of the invention；Electric current A/D collector and voltage A/D acquisition The existing digital acquisition device chip that device is all made of is constituted, and converts analog signals into digital signal；Low-pass filter circuit is adopted With second order active low-pass filter circuit, to reduce the high aliasing error for matching signal；LCD display 12 is for showing FPGA's Harmonic management result；Microprocessor analyzes harmonic components according to the voltage signal and current signal of acquisition, is convenient for subsequent calculating Harmonic loss.

The transformer harmonic measurement device of the invention is opened by folded state when in use, by folding supporting mechanism, It realizes and the bottom of equipment box 1 is supported；When opening folding supporting mechanism, inserting rod 17 is removed from locking bed 36, then It is buckled on vertical supporting pipe 16 using the U-shaped plug 33 of 36 end of locking bed and realizes inclined shore, then by two swing struts 19 It is removed from U-lag mouth 63, and is rocked to the front side of inserting rod 17 downwards, forward, then by two swing struts 19 to the left and right two Side is pushed aside, to respectively enter two C-shapeds by wedge 27, is inserted into vertical supporting pipe 16 further according to needing to adjust inserting rod 17 Depth realizes the height adjustment of equipment box 1；When carrying out current transformer 3 and voltage transformer 5 connects, by fixes sleeve 40 and quill 41 is respectively sleeved on two squeeze grip bars of conductive clip 6 or two pressings of split core type current transformer It on handlebar stem, is needed further according to distance, adjusts the collapsing length of insulated telescopic rods 39, and by Telescopic positioning device to flexible Length is positioned, then the wire drawing 42 that will insulate is tightened after being clamped in v-shaped gap notch 55 and is wound on wrapping post 54, and pressing is passed through Pulling force pressing lever 52 makes insulation wire drawing 42 pull quill 41 close to fixes sleeve 40, thus remote boot server pincer electric current The opening of mutual inductor or conductive clip 6 is opened, then unclamps pulling force pressing lever 52 after being directed at corresponding power transmission line, keeps pincerlike electric current mutual Sensor or 6 carry of conductive clip are on corresponding power transmission line；Restart power switch 13, so that harmonic detector 2 is powered, then press Detection button 14 carries out acquisition, filtering, frequency analysis and the analysis of voltage signal and circuit signal as the result is shown；Each mutually defeated After electric line detects, the withdrawal of flexible mounting rod, current transformer 3 and conductive clip 6 is put into equipment box 1, case lid The lid of plate 9 closes locking, then folding supporting mechanism is restored folded state, is readily transported.

Claims (10)

1. a kind of transformer harmonic measurement device, it is characterised in that: including equipment box (1), cover plate (9) and folding support Mechanism；Harmonic detector (2), current transformer (3), voltage transformer (5) and flexible installation are equipped in equipment box (1) Bar；Folding supporting mechanism is mounted on the bottom of equipment box (1), for being supported to equipment box (1)；Cover plate (9) hinge It connects on the upside opening edge for being mounted on equipment box (1), for being covered to upside opening；Flexible mounting rod is for becoming Electrical connection installation current transformer (3) and voltage transformer (5) on the power transmission line of depressor connection；Harmonic detector (2) respectively with Current transformer (3) and voltage transformer (5) electrical connection, the voltage signal and electricity on power transmission line for acquiring transformer connection Flow signal.

2. transformer harmonic measurement device according to claim 1, it is characterised in that: folding supporting mechanism includes vertical branch Stay tube (16), inserting rod (17), hound (34) and two swing struts (19)；In equipment box (1) downside back edge Middle part is equipped with stay tube hinged seat (15), and the upper end of vertical supporting pipe (16) is hingedly mounted on stay tube hinged seat (15), makes vertical The lower end of support tube (16) can swing；The upper end of inserting rod (17) is inserted into the lower end of vertical supporting pipe (16)；It is inserting Threaded hole (28) are arranged at intervals on dress bar (17), limit hole is equipped on the tube wall of vertical supporting pipe (16)；On limit hole Caging bolt (29) are installed, are mounted on threaded hole (28) for threaded engagement；On equipment box (1) downside and it is located at The front side of stay tube hinged seat (15) is equipped with strut hinged seat (35)；The upper end of hound (34) is hingedly mounted on strut hinged seat (35) on, make the lower end of hound (34) can swing；U-shaped plug (33) are equipped on the lower end of hound (34)；Perpendicular Limit flange collar (32) is equipped with to the outer wall of support tube (16)；U-shaped plug (33) is buckled on vertical supporting pipe (16), and U-shaped is pitched The lower side of head (33) presses on limit convex circle (32)；It is horizontally arranged on inserting rod (17) and is laterally hinged with axis, in transverse direction One side hinged block (20) is hingedly installed on the left and right ends of articulated shaft；It is equipped on two side hinged blocks (20) A piece strut articulated shaft perpendicular with axis is laterally hinged with, two ends for swinging strut (19) are hingedly mounted on two sides respectively On the strut articulated shaft of side hinged block (20)；Front side strut (21) are equipped in the front side of inserting rod (17), strut (21) in front side Front end on be vertically installed with lateral compression bar (22)；The both ends of lateral compression bar (22) be equipped with one for press swing support Press head on bar (19)；One piece of bottom is equipped in the lower end of inserting rod (17) and two lower ends for swinging strut (19) Foot pad plate (18).

3. transformer harmonic measurement device according to claim 2, it is characterised in that: press head includes C-shaped by wedge (27), pressing axis (25), fixes sleeve (23) and support spring (24)；Circular shaft is equipped at the both ends of lateral compression bar (22) Hole；Fixes sleeve (23) is mounted at the upper aperture of circular shaft bore, and support spring (24) is set in fixes sleeve (23)；Pressing The upper end of axis (25) is protruded into fixes sleeve (23) after running through circular shaft bore, and is equipped with anti-dropout flange collar (26) on inserting end； Support spring (24) is resiliently supported between the top cylinder bottom of fixes sleeve (23) and the upper end of pressing axis (25)；C-shaped pressing Seat (27) is fixed on the lower end of pressing axis (25)；C-shaped presses the c-shaped opening of wedge (27) downward, for buckling pressing On swinging strut (19).

4. transformer harmonic measurement device according to claim 2, it is characterised in that: on equipment box (1) downside And the front side for being located at strut hinged seat (35) is equipped with inserted link locking buckle；Inserted link locking buckle is by locking bed (36) and two arcs Shape spring leaf (38) is constituted；The c-clip notch (37) for buckling inserting rod (17), and C-shaped are equipped on locking bed (36) Buckle the opening down of notch (37)；Two arc-shaped spring pieces (38) are separately mounted to the opening two sides of c-clip notch (37) Bian Shang；Inserting rod (17) enters in c-clip notch (37) after swinging forward, and two arc-shaped spring pieces (38) are in opening to slotting Dress bar (17) is squeezed into notch.

5. transformer harmonic measurement device according to claim 2, it is characterised in that: on vertical supporting pipe (16) laterally It is provided with one and is transversely mounted bar (30)；A swing rod locking buckle is equipped at the both ends for being transversely mounted bar (30)；Swing rod lock Tight buckle is by snap seats (31), locking tension spring (66) and a rectangular locking bar (64)；U-lag mouth is equipped on snap seats (31) (63), and on the notch side of U-lag mouth (63) it is equipped with rectangular lockhole；Rectangular locking bar (64) is inserted into rectangular lockhole, uses Locking is carried out in the opening to U-lag mouth (63)；It is vertically set on the end that rectangular locking bar (64) is located in U-lag mouth (63) It is equipped with lever (65), and the end of lever (65) is directed toward in U-lag mouth (63)；It is located at U-lag mouth (63) in rectangular locking bar (64) Outer end is equipped with end disc (67)；Locking tension spring (66) is set on rectangular locking bar (64), and is located at U-lag mouth (63) Outside；The both ends of locking tension spring (66) are respectively and fixedly installed on snap seats (31) and end disc (67).

6. transformer harmonic measurement device according to claim 1, it is characterised in that: harmonic detector (2) is by power supply mould Block, shell, LCD display (12), microprocessor, electric current A/D collector, voltage A/D collector and two low-pass filters Circuit composition；Microprocessor, electric current A/D collector, voltage A/D collector and two low-pass filters are all set in shell Interior, LCD display (12) is set on the upper side of shell；The output end of current transformer (3) passes through low-pass filter circuit It is electrically connected with the input terminal of electric current A/D collector；The output end of voltage transformer (5) passes through low-pass filter circuit and voltage A/ The input terminal of D collector is electrically connected；The output end of electric current A/D collector and voltage A/D collector respectively with microprocessor two The electrical connection of road input terminal；The display signal end of microprocessor is electrically connected with the control terminal of LCD display (12)；Power module difference It is supplied for LCD display (12), microprocessor, electric current A/D collector, voltage A/D collector and two low-pass filter circuits Electricity；It is equipped with power switch (13) and detection button (14) on the shell；Power switch (13) is serially connected in total power supply of power module On route；Detection button (14) is electrically connected with the control signal input of microprocessor.

7. transformer harmonic measurement device according to claim 1, it is characterised in that: current transformer (3) is pincerlike electricity Current transformer, and split core type current transformer is equipped with two squeeze grip bars；In two binding posts of primary side of voltage transformer (5) On be electrically connected with two conductive clips (6), and conductive clip (6) is equipped with two squeeze grip bars；Electricity pincers are equipped in equipment box (1) Limited post (4) and electricity folder limited post (7)；Split core type current transformer is clamped on electricity pincers limited post (4)；Conductive clip (6) is clamped in On electricity folder limited post (7).

8. transformer harmonic measurement device according to claim 7, it is characterised in that: flexible mounting rod includes insulating telescopic Bar (39), insulation wire drawing (42), quill (41), wire spool (61), pulling force pressing lever (52) and is held at fixes sleeve (40) Hold handle (59)；Insulated telescopic rods (39) are made of outer tube, middle sleeve and internal core rod；Internal core rod is inserted into middle sleeve, Middle sleeve is inserted into outer tube；Handle (59) are held to be fixedly mounted on the tail end of outer tube；The fixed peace of fixes sleeve (40) On the outer end of internal core rod；First pulley (43) are installed on the outer wall of fixes sleeve (40)；On outer tube and lean on Close hold is equipped with second pulley (51) at handle (59)；The end of pulling force pressing lever (52), which is hingedly mounted on, holds handle (59) On, resilient support is provided with rebound pressure spring (58) between pulling force pressing lever (52) and gripping handle (59), and springs back pressure spring (58) both ends pass through positioning column (57) limit installation；Pulling force swing rod (53) are vertically installed on pulling force pressing lever (52), And v-shaped gap notch (55) are equipped in the swing end of pulling force swing rod (53)；Wrapping post is installed on pulling force swing rod (53) (54), anticreep disk (56) and in the end of wrapping post (54) are equipped with；Wire spool (61) is rotatably mounted on by support (60) On outer tube；One end of insulation wire drawing (42) is connected on quill (41), and the other end successively passes through first pulley (43), the It is wound around on wire spool (61) after two pulleys (51), v-shaped gap notch (55) and wrapping post (54)；Insulate wire drawing (42) around At least winding five is enclosed on terminal (54)；V-shaped gap notch (55) clamps insulation wire drawing (42)；Fixes sleeve (40) and work Moving sleeve (41) is used to be respectively sleeved on two squeeze grip bars of conductive clip (6) or two of split core type current transformer press On handle hand lever.

9. transformer harmonic measurement device according to claim 8, it is characterised in that: set in the tail portion of quill (41) There are buckle disk (45)；The C-shaped plug (44) for being buckled on buckle disk (45) is equipped on fixes sleeve (40)；Around Coiling driving handle (62) is fixedly installed in the shaft of drum (61)；Cabinet handle is equipped in the front side of equipment box (1) (8)；Side strip (10) are hingedly installed in the forward edge of cover plate (9), lock convex block (11) is equipped on side strip (10)； It is equipped with the lock embedded hole entered convenient for lock convex block (11) in the front side of equipment box (1), and is equipped in lock embedded hole For adsorbing the magnet of lock convex block (11).

10. transformer harmonic measurement device according to claim 8, it is characterised in that: at the end of outer tube and middle sleeve A Telescopic positioning device is equipped on mouth outer wall；Telescopic positioning device is by annulus set (47), Locating extension spring (49) and positioning Pin rod (50) is constituted；Dowel hole is equipped on annulus set (47), positioning pin rod (50) is inserted into dowel hole；Positioning pin rod (50) insertion end is set as hemispherical ends, is equipped with rod end disk (48) on the outer end of positioning pin rod (50)；Positioning Tension spring (49) is set on positioning pin rod (50), and the both ends of Locating extension spring (49) be separately mounted to the outer wall of annulus set (47) with And on rod end disk (48)；It is equipped in internal core rod and the insertion end of middle sleeve convenient for the flexible fixed of positioning pin rod (50) insertion Position hole；The annulus set (47) of two Telescopic positioning devices is respectively sleeved on the port outer wall of internal core rod and middle sleeve, and in circle The two sides of ring set (47) are equipped with limit stop ring (46).